Alright so I was wanting to figure out how to run 2 FlyFFs at once, I asked a friend but what he said didnt work at all.
Anyway I know alot of you probably already know how to do this, but for those of you who don't this might help. (Especially for vista users

)
Non-Vista Users:
Go to:
My Computer > Program Files > gPotato > Neuz Configuration Settings
Alright once you're in Neuz Configuration Settings (it'll be in wordpad)
You should see something that says "Fullscreen 1"
Okay, delete the "1" and put a "0" then save it.
Exit out of the file, start FlyFF, and at the patcher, go to options, change the resolution to 800X600, exit out of the options and start the game, it should start in window mode, then just start another FlyFF and you should have 2 windows.
Okay, now for Vista users.
There's alot of different ways I found out that you can do it on vista. I'll give you directions to what I did.
Alright, first do just like the other users.
Computer > Local Disk > Program Files > gPotato. But instead of opening the Neuz Configuration settings you're going to copy/paste it into a different folder, just make a new folder (you can delete it afterwards)
Alright so after you've copy + pasted it into the new folder, open Neuz Configuration Settings and do just like other users, change "Fullscreen 1" to "Fullscreen 0"
Alright, now you have to move Neuz Configuration Settings back into the gPotato file. Then run FlyFF, at the patcher go to options, change the resolution to 800X600, exit out of the options and start the game, then just run another FlyFF like you normally open it.
Hope this helped for any of you wonderring how to do this

btw i just said change resolution to 800X600 because thats a good size to have multiple game windows in imo.